Hinge



Jan. 13, 1959 I R. c. PETERSON HINGE Filed March 29, 1957 bwa/jij;

United States Patent O HINGE Raymond C. Peterson, Rockford, Ill., assignor to National Lock Co., Rockford, Ill., a corporation of Delaware Application March 29, 1957, Serial N o. 649,498

4 Claims. (Cl. 16168) This invention pertains to hinges of a common commercial type and more specifically to the false pin which simulates in appearance a head of the pintle.

Hinges of this character comprise two interengaging leaves forming a bore into which the hinge pintle extends and are provided at the end opposite to the head of the pintle with a false pin having a head which in appearance constitutes a head of the pintle but in fact performs no mechanical function other than the closing of the lower end of the pintle bore.

Hinges of this type are customarily plated after being fully assembled. During the plating operation the hinge is submerged in one or more plating solutions, some of which has heretofore been trapped in the pintle bore and later after the plating operation has been completed gradually bleeds out around the false pintle head, thereby discoloring and ruining the appearance of the plated product. In the hinges in which this discoloration occurs, the false pintle head or fixed short pin is driven into the lower end of the pintle bore so as to serve as a closure therefor. It is the presence of this closure pin which causes the plating solution to be trapped in the bore from which it eventually bleeds out, with the resultant disfiguration of the hinge.

The primary purpose of my present invention is to provide a false pintle head or short pin which when driven into the bore in the usual manner will apparently constitute a complete closure for the bore, but in fact will afford a passage or space through which the plating solution will drain from the pintle before the nal plating iinish is applied. By thus enabling the trapped solution to escape, the discoloration of the finished product by subsequent bleeding of the solution from the bore is obviated.

In order to facilitate an understanding of my invention, I have illustrated on the accompanying drawings a preferred embodiment thereof.

Referring to the drawings,

Fig. 1 is a face View of a hinge constructed in accordance with my invention;

Fig. 2 is a sectional View on the line 2 2 of Fig. 1;

Fig. 3 is a plan view looking down at the hinge of Fig. 1;

Fig. 4 is a sectional view on the line 4--4 of Fig. 1;

Fig. 5 is an enlargement of the lower end of Fig. 2;

Fig. 6 is a plan view of the false pintle of my invention; and

Fig. 7 is a side elevation of the structure shown in Fig. 6.

Referring to the drawings more in detail, reference characters 8 and 9 indicate generally the leaves of a hinge provided respectively with the curls 11 and 12 shaped to interengage so as to provide an elongated bore for the reception of the pintle or hinge pin 13 by which the leaves are hingedly connected. The pintle is inserted into the bore from the upper end thereof and is provided with a head 14 which covers the upper end of the bore.

The pintle 13 forms the sole connection between the Patented Jan. i3, 1959 ICC leaves, but in order to present a symmetrical and pleasing appearance a false pintle or short pin indicated generally by reference character 15 is seated in the lower end of the bore. The short pin is seated in the bore by a drive fit and in order to facilitate the driving and seating of the pin in the bore it is peripherally provided with longitudinally disposed serrations 16 providing passages 17 through which liquid trapped within the bore may bleed toward the end of the bore.

The pin 15 is provided with a head 18 similar in size and appearance to the head 14 at the upper end of the pintle 13 so that the two ends of the hinge present symmetrical and substantially identical appearances.

Since the pin 15 is driven into the bore with a drive tit and would entirely close the lower end of the bore, unless provision to prevent such closure is made, I have, therefore, provided the inner face of the head 18 with a plurality of, in the present instance, three projections or embossings 19 which limit the insertion of the pin into the bore so as to leave an existing passage between the pin head and the curl of the hinge, as illustrated in Figs. l and 5.

After the hinge has been assembled, it is subjected to a plating process during which it is immersed in one or more plating solutions. The slight clearance between the pintle 13 and the wall of the surrounding bore permit the entrance of the plating solutions into the bore and, unless provision be made to permit the escape of such entrapped solutions, they will eventually bleed out through the lower end of the hinge bore and discolor and thereby disgure the appearance of the hinge.

My novel invention, however, precludes such entrapment by providing for the escape of the entrapped solutions which drain from the bore downwardly through the passages 17 of the pin 15 and outwardly between the head 18 of said pin and the body of the hinge by reason of the spacing aiforded by the embossings 19. The solutions are, therefore, discharged from the bore of the hinge before the nal plating is accomplished, thereby obviating subsequent escape of such solutions from the completed hinge and insuring against disgurement and discoloration of the completed product.

While I have shown and described a preferred embodiment of 'my invention, it is obvious that the structural details may be Varied within considerable limits without departing from the essence of my invention as defined in the following claims.

I claim:

1. A hinge, comprising a pair of interengaging leaves providing a pintle bore, a pintle disposed in said bore and provided at its upper end with a head, and a pin seated in the lower end of said bore having a head simulating said pintle head and provided with projecting portions bossed portions projecting longitudinally of the pin from the inner face of said head.

4. A false pintle head for a hinge, comprising a body provided with longitudinal serrations, and a head pro vided with projections extending longitudinally of the body from the inner face of said head.

References Cited in the file of this patent' UNITED STATES PATENTS 2,786,229 Carroll Mar. 26, 1957 

